EP0783243B1 - Electric fence device - Google Patents
Electric fence device Download PDFInfo
- Publication number
- EP0783243B1 EP0783243B1 EP95932272A EP95932272A EP0783243B1 EP 0783243 B1 EP0783243 B1 EP 0783243B1 EP 95932272 A EP95932272 A EP 95932272A EP 95932272 A EP95932272 A EP 95932272A EP 0783243 B1 EP0783243 B1 EP 0783243B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- string
- threads
- electrically conductive
- attachment means
- posts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000005060 rubber Substances 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 2
- 241001465754 Metazoa Species 0.000 description 9
- 239000002184 metal Substances 0.000 description 3
- 229920000914 Metallic fiber Polymers 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K3/00—Pasturing equipment, e.g. tethering devices; Grids for preventing cattle from straying; Electrified wire fencing
- A01K3/005—Electrified fencing for pastures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05C—ELECTRIC CIRCUITS OR APPARATUS SPECIALLY DESIGNED FOR USE IN EQUIPMENT FOR KILLING, STUNNING, OR GUIDING LIVING BEINGS
- H05C1/00—Circuits or apparatus for generating electric shock effects
- H05C1/04—Circuits or apparatus for generating electric shock effects providing pulse voltages
Definitions
- Electric fences for enclosed pasture-land are previously known and appreciated for being simple and effective. They consist of a grounded mains- or battery-operated pulse generator for high voltage and low power and, connected thereto, a smooth metallic wire which is carried by insulating poles so as to surround the enclosed pasture-land. At first contact with the wire the domestic animals learn that it gives an unpleasant electric chock and thereafter avoid subsequent contact. To date simple stainless metallic wire has been used as wire material, in more sophisticated applications woven into a thin ribbon, which makes it more visible. The previously known type of electric fences have however, a considerable disadvantage. Young domestic animals which have not yet come into contact with the electric fence often approach it with such a speed that they are not restricted by the electric chock before the wire has already been torn off by their rush.
- the invention is a safe and economic solution to this and other problems. It is mainly characterized in that one or more electrically conductive wires are associated with an elastic material in such a way that the wires and the material together form a considerably but restricted and elastically stretchable string, which is electrically conductive at least on parts of its surface, and which together with the poles comprise the enclosure.
- an elastic and electrically conductive string is formed around a synthetic rubber core 1 which preferably is divided into several treads, an envelope of tubular braided plastic threads 2 and a number of metal threads 3 included in the braid.
- the plastic material is preferably a high quality polyamide, e.g. one being known under the commercial denomination 6006, and is treated against UV-radiation degradation.
- the metallic thread is comprised of stainless steel with a diameter of 0.15 - 0.3 mm.
- the tubular braid allows the string to be stretched out to the length where the plastic threads 2 lie against each other in an almost longitudinal direction and it is dimensioned such with respect to the core 1 that the latter thereby is stretched to about two times its length in the state of rest.
- the outer diameter of the string is about 4 mm in its state of rest.
- a string which is formed in such a way is electrically conductive by the metallic threads being braided into its surface and is elastically stretchable because of the association between the rubber core and the braided envelope, but the stretchability is restricted by the lengths of the plastic threads.
- the string In order to secure the association between the core and the envelope, the string should be provided with a knot near all free ends. The properties of the string makes it ideal for replacing previously used metallic wires and ribbons in electric fences. It is thereby preferably hung on a post according to Fig.
- the attachment means 7 has the same shape as a boat anchor and is positioned obliquely with respect to the profile 5 in order to allow it to be hooked together with a similar attachment means of a neighbouring post of the same type as is illustrated on Fig. 4. The purpose of this is to provide the easiest way of arranging an easily opened place in the fence.
- the strings which are tied around the respective attachment means contact each other by this hooking together and thereby provide electrically conductive connection.
- the post carrying the upper attachment means is slightly pressed down into the ground, it is simple to simultaneously pull it out from the ground and from the mutual connection between the attachment means so as to open the fence. Since both the profile 5 and the attachment means 7 are made from electrically insulating materials the post may be gripped and lifted simply by the hands.
- the string When mounting the fence the string is stretched to about 3/4 of its possible length and is successively attached to the previously mounted posts, which are placed 15 - 20 m apart, by winding it one turn around the attachment means 7.
- the fence By the fence being mounted this way the risk of it being run down by rushing animals is eliminated because its stretchability gives the animals time to slow down under the influence of the electric chocks from the string. The animal is not injured and the string will stretch it self straight again when the animal changes direction.
- the considerably better visibility of the string compared to a simple metal wire also reduces the risk of the animals running on to it. This may be enhanced by using plastic threads in several different colours in the envelope of the string.
- the scoop of this invention also encloses several other embodiments.
- a rubber string which by mixing or impregnation with electrically conductive material is provided with a sufficient conductivity for the high voltage electrical pulses also on the surface.
- very thin threads of metal are mixed with equally thin threads of synthetic fibres and spun according to the method known from the knitwear industry such as to result in a so called tricot string.
- Such a string has a considerable elastic stretchability and may be twisted together to the thickness and strength necessary for electric fences.
- such a string may be used for spinning around a rubber core.
- a smooth steel wire which is wound into a helical spring and surrounds a rubber core may form the desired string.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Insects & Arthropods (AREA)
- Catching Or Destruction (AREA)
- Housing For Livestock And Birds (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9403088A SE505138C2 (sv) | 1994-09-15 | 1994-09-15 | Anordning vid elstängsel |
SE9403088 | 1994-09-15 | ||
DE4433496A DE4433496A1 (de) | 1994-09-20 | 1994-09-20 | Elektrozaun |
PCT/SE1995/001012 WO1996008140A1 (en) | 1994-09-15 | 1995-09-08 | Electric fence device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0783243A1 EP0783243A1 (en) | 1997-07-16 |
EP0783243B1 true EP0783243B1 (en) | 2001-02-21 |
Family
ID=25940287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95932272A Expired - Lifetime EP0783243B1 (en) | 1994-09-15 | 1995-09-08 | Electric fence device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0783243B1 (fi) |
AU (1) | AU3536495A (fi) |
DK (1) | DK0783243T3 (fi) |
FI (1) | FI107871B (fi) |
WO (1) | WO1996008140A1 (fi) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7405274B2 (en) | 2003-06-04 | 2008-07-29 | Fibrogen, Inc. | Connective tissue growth factor antibodies |
US7481021B2 (en) | 2003-12-04 | 2009-01-27 | Bird Barrier America, Inc. | Electric deterrent device |
EP2621266B1 (en) | 2011-10-04 | 2016-04-06 | Bird-B-Gone, Inc. | Electrified bird deterrent device with cavity |
US8293044B1 (en) | 2012-06-26 | 2012-10-23 | Bird Barrier America, Inc. | Animal deterrent device with insulated fasteners |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9303791U1 (de) * | 1993-03-15 | 1993-05-13 | Steuer, Ludwig, O-9033 Chemnitz | Weidezaundraht für elektrische Weidezäune |
-
1995
- 1995-09-08 WO PCT/SE1995/001012 patent/WO1996008140A1/en active IP Right Grant
- 1995-09-08 EP EP95932272A patent/EP0783243B1/en not_active Expired - Lifetime
- 1995-09-08 AU AU35364/95A patent/AU3536495A/en not_active Abandoned
- 1995-09-08 DK DK95932272T patent/DK0783243T3/da active
-
1997
- 1997-03-12 FI FI971042A patent/FI107871B/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI971042A0 (fi) | 1997-03-12 |
WO1996008140A1 (en) | 1996-03-21 |
AU3536495A (en) | 1996-03-29 |
DK0783243T3 (da) | 2001-06-18 |
EP0783243A1 (en) | 1997-07-16 |
FI107871B (fi) | 2001-10-31 |
FI971042A (fi) | 1997-03-12 |
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